Include a stripped-down version of FLTK in tree and add a USE_INCLUDED_FLTK option to build against it.
git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@4603 3789f03b-4d11-0410-bbf8-ca57d06f2519
diff --git a/common/fltk/src/xutf8/lcUniConv/utf8.h b/common/fltk/src/xutf8/lcUniConv/utf8.h
new file mode 100644
index 0000000..fe189cc
--- /dev/null
+++ b/common/fltk/src/xutf8/lcUniConv/utf8.h
@@ -0,0 +1,110 @@
+/* $XFree86: xc/lib/X11/lcUniConv/utf8.h,v 1.3 2000/11/28 18:50:07 dawes Exp $ */
+
+/*
+ * UTF-8
+ */
+
+/* Specification: RFC 2279 */
+
+static int
+utf8_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
+{
+ unsigned char c = s[0];
+
+ if (c < 0x80) {
+ *pwc = c;
+ return 1;
+ } else if (c < 0xc2) {
+ return RET_ILSEQ;
+ } else if (c < 0xe0) {
+ if (n < 2)
+ return RET_TOOFEW(0);
+ if (!((s[1] ^ 0x80) < 0x40))
+ return RET_ILSEQ;
+ *pwc = ((ucs4_t) (c & 0x1f) << 6)
+ | (ucs4_t) (s[1] ^ 0x80);
+ return 2;
+ } else if (c < 0xf0) {
+ if (n < 3)
+ return RET_TOOFEW(0);
+ if (!((s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
+ && (c >= 0xe1 || s[1] >= 0xa0)))
+ return RET_ILSEQ;
+ *pwc = ((ucs4_t) (c & 0x0f) << 12)
+ | ((ucs4_t) (s[1] ^ 0x80) << 6)
+ | (ucs4_t) (s[2] ^ 0x80);
+ return 3;
+ } else if (c < 0xf8) {
+ if (n < 4)
+ return RET_TOOFEW(0);
+ if (!((s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
+ && (s[3] ^ 0x80) < 0x40
+ && (c >= 0xf1 || s[1] >= 0x90)))
+ return RET_ILSEQ;
+ *pwc = ((ucs4_t) (c & 0x07) << 18)
+ | ((ucs4_t) (s[1] ^ 0x80) << 12)
+ | ((ucs4_t) (s[2] ^ 0x80) << 6)
+ | (ucs4_t) (s[3] ^ 0x80);
+ return 4;
+ } else if (c < 0xfc) {
+ if (n < 5)
+ return RET_TOOFEW(0);
+ if (!((s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
+ && (s[3] ^ 0x80) < 0x40 && (s[4] ^ 0x80) < 0x40
+ && (c >= 0xf9 || s[1] >= 0x88)))
+ return RET_ILSEQ;
+ *pwc = ((ucs4_t) (c & 0x03) << 24)
+ | ((ucs4_t) (s[1] ^ 0x80) << 18)
+ | ((ucs4_t) (s[2] ^ 0x80) << 12)
+ | ((ucs4_t) (s[3] ^ 0x80) << 6)
+ | (ucs4_t) (s[4] ^ 0x80);
+ return 5;
+ } else if (c < 0xfe) {
+ if (n < 6)
+ return RET_TOOFEW(0);
+ if (!((s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
+ && (s[3] ^ 0x80) < 0x40 && (s[4] ^ 0x80) < 0x40
+ && (s[5] ^ 0x80) < 0x40
+ && (c >= 0xfd || s[1] >= 0x84)))
+ return RET_ILSEQ;
+ *pwc = ((ucs4_t) (c & 0x01) << 30)
+ | ((ucs4_t) (s[1] ^ 0x80) << 24)
+ | ((ucs4_t) (s[2] ^ 0x80) << 18)
+ | ((ucs4_t) (s[3] ^ 0x80) << 12)
+ | ((ucs4_t) (s[4] ^ 0x80) << 6)
+ | (ucs4_t) (s[5] ^ 0x80);
+ return 6;
+ } else
+ return RET_ILSEQ;
+}
+
+static int
+utf8_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n) /* n == 0 is acceptable */
+{
+ int count;
+ if (wc < 0x80)
+ count = 1;
+ else if (wc < 0x800)
+ count = 2;
+ else if (wc < 0x10000)
+ count = 3;
+ else if (wc < 0x200000)
+ count = 4;
+ else if (wc < 0x4000000)
+ count = 5;
+ else if (wc <= 0x7fffffff)
+ count = 6;
+ else
+ return RET_ILSEQ;
+ if (n < count)
+ return RET_TOOSMALL;
+ switch (count) { /* note: code falls through cases! */
+ case 6: r[5] = 0x80 | (wc & 0x3f); wc = wc >> 6; wc |= 0x4000000;
+ case 5: r[4] = 0x80 | (wc & 0x3f); wc = wc >> 6; wc |= 0x200000;
+ case 4: r[3] = 0x80 | (wc & 0x3f); wc = wc >> 6; wc |= 0x10000;
+ case 3: r[2] = 0x80 | (wc & 0x3f); wc = wc >> 6; wc |= 0x800;
+ case 2: r[1] = 0x80 | (wc & 0x3f); wc = wc >> 6; wc |= 0xc0;
+ case 1: r[0] = wc;
+ }
+ return count;
+}